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Hello,
On Jul 3, 2008, at 16:23, Bryan Pierce wrote:
Michael Lorenz wrote:
On Jul 3, 2008, at 06:56, Bryan Pierce wrote:
#### APROACH #1 - xf86config #####
Wrong approach ;)
Try X -configure.
But I get this...
<snip>
(--) Using wscons driver
(WW) xf86EnableIO 3
(II) xf86EnableIO: ffffffff
(WW) Can't map IO space!
</snip>
and again...after the ATI Rage seems to load...
That's harmless - the atimisc driver doesn't need PCI IO access.
Anyway, X -configure should give you something that works. It will
need adjustment for video mode, colour depth and such. You'll most
likely have to do something about the Monitor section too - all the
CRTs used in G3 iMacs need a fixed horizontal frequency, 60kHz on
older models and I think 72kHz on the last few. Since you've got a
Rage Pro my guess would be 60kHz.
have fun
Michael
I looked around and found these specs...(a bit more than I could find
earlier)
Built-in Display: 15.0" (13.8") Native Resolution:
800x600*
Details: *15.0" (13.8" viewable area) display supports
640x480 at 117 Hz,
800x600 at 95 Hz, and 1024x768 at 75 Hz.
Yup, that;s fixed 60kHz.
I'm not totally sure how that all translates (I'm assuming I can
ignore the "native resolution")
The one thing that I can't find anything on is the v-sync range
I know conservative is good, but if I entered the 50-70 Hz (is it Hz?
:P ) range, then I should
be OK, right?!
No.
You'll want 70-120Hz vertical to accomodate the modes you listed
above, and 60kHz horizontal.
The iMac's built-in CRT does NOT behave like a regular multisync
monitor, mainly because it's not multisync. It only synchronizes on
60kHz horizontal. Just do the math, all the modes listed above use the
same horizontal frequency ( did you notice? fewer lines -> higher
refresh rate ). Therefore the 'conservative approach' you mentioned,
which is fine for regular monitors, will not give you any results on
the iMac.
have fun
Michael
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